Unlock instant, AI-driven research and patent intelligence for your innovation.

Pilot selection method, wireless communication system and base station thereof

a wireless communication system and pilot selection technology, applied in the field of pilot selection method, wireless communication system and base station thereof, can solve the problems of easy interference and no method proposed for pilot selection for support of the above heterogeneous wireless communication network

Active Publication Date: 2014-05-06
ACER INC
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This method enhances data transmission reliability in heterogeneous wireless communication networks by reducing interference between different transmission links, ensuring efficient and reliable data transmission across various types of base stations.

Problems solved by technology

There is currently no method proposed on the pilot selection for support of the above heterogeneous wireless communication networks.
In the macro-femto heterogeneous network, interference can easily occur because data can be transmitted across two different transmission links.
Therefore, it is an important issue to find an effective and efficient pilot selection scheme so as to ensure a more reliable data transmission in such heterogeneous wireless communication network.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pilot selection method, wireless communication system and base station thereof
  • Pilot selection method, wireless communication system and base station thereof
  • Pilot selection method, wireless communication system and base station thereof

Examples

Experimental program
Comparison scheme
Effect test

fourth exemplary embodiment

[0060]Furthermore, according the pilot selection engine described above, a pilot pattern p1s0 is selected for the femtocell ABS 642, a pilot pattern p0s0 is selected for the femtocell ABS 662 and a pilot pattern p2s0 is selected for the femtocell ABS 682. The pilot pattern p1s0, the pilot pattern p0s0 and the pilot pattern p2s0 are generated according to the step S352 to the step S356. The equation (5) is not used in the fourth exemplary embodiment since the selected pilot patterns are different just by using the equation (4) and the equation (6) and following the step S352 to the step S356. The detailed calculation procedures are not repeated herein since the one of ordinary skill in the art can easily obtain the pilot pattern result by following the procedures illustrated in FIG. 3A and FIG. 3B for the femtocell ABS 642, the femtocell ABS 662 and the femtocell ABS 682.

[0061]FIG. 7 is a schematic diagram illustrating a cell deployment example according to a fifth exemplary embodime...

fifth exemplary embodiment

[0063]Furthermore, according the pilot selection engine described above, a pilot pattern p1s0 is selected for the femtocell ABS 742, a pilot pattern p2s0 is selected for the femtocell ABS 782 and a pilot pattern p0s0 is selected for the femtocell ABS 762. The pilot pattern p1s0, the pilot pattern p250 and the pilot pattern p0s0 are generated according to the step S352 to the step S356. The equation (5) is not used in the fifth exemplary embodiment since the selected pilot patterns are different just by using the equation (4) and following the step S352 to the step S356. The detailed calculation procedures are not repeated herein since the one of ordinary skill in the art can easily obtain the pilot pattern result by following the procedures illustrated in FIG. 3A and FIG. 3B for the femtocell ABS 742, the femtocell ABS 762 and the femtocell ABS 782.

[0064]FIG. 8 is a schematic diagram illustrating a cell deployment example according to a sixth exemplary embodiment. A cell deployment ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A pilot selection method adapted for selecting rank-2 pilot patterns for a macrocell advanced base station (ABS), a femtocell ABS and a non-macrocell and non-femtocell ABS is proposed along with a wireless communication system and a base station thereof. Different rank-2 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABS and non-macrocell and non-femtocell ABS rank-2 pilot patterns. Another pilot selection method for selecting a rank-1 pilot pattern for a femtocell ABS co-located with at least a macrocell ABS is also proposed. Different rank-1 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABSs using rank-1 and / or rank-2 pilot patterns, where some of the macrocell ABSs can use rank-2 pilot patterns and the rest of the macrocell ABSs just use rank-1 pilot patterns. Also, different rank-1 pilot pattern is selected for the femtocell ABS from its neighboring femtocell ABSs using rank-1 pilot patterns.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of U.S. provisional application Ser. No. 61 / 290,768, filed on Dec. 29, 2009, all disclosures are incorporated therewith.BACKGROUND[0002]1. Technical Field[0003]The disclosure relates to a pilot selection method for different types of base stations in a heterogeneous wireless communication network, a wireless communication system and a base station thereof.[0004]2. Related Art[0005]In OFDMA wireless communication system, pilot patterns for different numbers of transmission streams have been completely defined in several wireless communication standards such as 3GPP LTE and IEEE 802.16m, and associated pilot selection methods have also been proposed. The transmission of pilot sub-carriers in downlink is necessary for enabling channel estimation, measurements of channel quality indicators such as the signal-to-interference ratio (SINR), frequency offset estimation and so forth. In order to avoid ch...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): H04W4/00H04B7/216H04B3/10
CPCH04L5/0062H04L5/005H04L5/0007H04L5/0058H04L5/0073
Inventor HO, CHUNG-LIENTSAI, CHANG-LANZHENG, YAN-XIUFANG, YU-CHUAN
Owner ACER INC